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Engine-Codes – GMC – B255F 2018 GMC Sierra

B255F 2018 GMC Sierra Code - Interior Door Handle Backlight Circuit

Quick Answer

The B255F diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the interior door handle backlight circuit. Common causes include Faulty interior door handle backlight bulb, Wiring issues such as a short circuit or open circuit, Defective door handle backlight control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B255F 2018 GMC Sierra indicates Interior Door Handle Backlight Circuit.
Common causes
Common causes include Faulty interior door handle backlight bulb, Wiring issues such as a short circuit or open circuit, Defective door handle backlight control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B255F 2018 GMC Sierra Description

The B255F diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the interior door handle backlight circuit. This code indicates that there is a malfunction in the circuit responsible for illuminating the interior door handle. In modern vehicles, interior door handle backlights serve both functional and aesthetic purposes. They provide visibility and ease of use in low-light conditions, enhancing the overall user experience.

OBDII Code B255F 2018 GMC Sierra - Interior Door Handle Backlight Circuit
B255F 2018 GMC Sierra Code - Interior Door Handle Backlight Circuit

Common Causes of B255F 2018 GMC Sierra

  1. Faulty interior door handle backlight bulb.
  2. Wiring issues such as a short circuit or open circuit.
  3. Defective door handle backlight control module.
  4. Corrosion or damage to electrical connectors.
  5. Issues with the vehicle's body control module.

Symptoms of B255F 2018 GMC Sierra

  1. Interior door handle backlight not illuminating.
  2. Dim or flickering interior door handle backlight.
  3. Inconsistent backlight operation.
  4. Dashboard warning light indicating a circuit malfunction.

How to Fix B255F 2018 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the DTC and pinpoint the faulty component.
  2. Inspect the interior door handle backlight bulb and replace it if necessary.
  3. Check the wiring for any signs of damage or corrosion, repairing or replacing any affected wires.
  4. Test the door handle backlight control module and replace it if it is found to be faulty.
  5. Clear the DTC from the vehicle's system and test the interior door handle backlight to ensure proper operation.

Cost to Fix B255F 2018 GMC Sierra

The cost of repairing the interior door handle backlight circuit can vary depending on the specific cause of the issue and the labor rates in your area. Generally, replacing a faulty bulb or repairing wiring may cost between $50 to $150, while replacing a control module could range from $200 to $500. Keep in mind that labor rates at auto repair shops can vary, typically ranging from $80 to $150 per hour. It is recommended to consult with a professional technician for an accurate cost estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for B255F 2018 GMC Sierra

B255F:02 Interior Door Handle Backlight Circuit Short to Ground

B255F:04 Interior Door Handle Backlight Circuit Open

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B255F 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B255F in a 2018 GMC Sierra related to the Interior Door Handle Backlight Circuit?

The common symptoms include flickering or non-functional interior door handle backlighting.

2. What are the possible causes of OBDII code B255F in a 2018 GMC Sierra?

Potential causes of this code may include a faulty interior door handle backlight assembly, damaged wiring, or a malfunctioning control module.

3. How can I diagnose the issue related to the Interior Door Handle Backlight Circuit in my 2018 GMC Sierra?

Diagnosing the problem involves checking the interior door handle backlight assembly for any visible damage, testing the wiring for continuity, and using a diagnostic tool to scan for specific fault codes like B255F.

4. Can I repair the Interior Door Handle Backlight Circuit issue in my 2018 GMC Sierra myself?

Depending on your skill level and access to tools, you may be able to repair the problem yourself by replacing the faulty interior door handle backlight assembly, repairing damaged wiring, or resetting the control module.

5. Is it safe to continue driving my 2018 GMC Sierra with OBDII code B255F related to the Interior Door Handle Backlight Circuit?

While the issue may not affect the overall drivability of the vehicle, it is recommended to address the problem promptly to ensure proper functionality of the interior door handle backlighting.

6. How much does it typically cost to repair OBDII code B255F in a 2018 GMC Sierra?

The cost of repairing this issue can vary depending on the specific cause of the problem, but it may involve expenses for parts and labor, with the total cost ranging from a few hundred to over a thousand dollars.

7. Can a faulty interior door handle backlight assembly cause other electrical problems in my 2018 GMC Sierra?

While a faulty interior door handle backlight assembly may not directly cause other electrical issues, it is important to address the problem promptly to prevent any potential complications or failures in the vehicle's electrical system.

8. Will resetting the control module resolve OBDII code B255F related to the Interior Door Handle Backlight Circuit in my 2018 GMC Sierra?

Resetting the control module may temporarily clear the fault code, but if the underlying issue such as a faulty part or wiring problem is not addressed, the code is likely to reappear.

9. Are there any recalls or technical service bulletins related to OBDII code B255F in a 2018 GMC Sierra?

It is recommended to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins addressing the specific issue related to the Interior Door Handle Backlight Circuit in your 2018 Sierra.

10. How can I prevent OBDII code B255F from occurring again in my 2018 GMC Sierra after repairing the Interior Door Handle Backlight Circuit issue?

To prevent the recurrence of this code, it is advisable to ensure proper installation of any replacement parts, regularly inspect the interior door handle backlighting system, and address any electrical issues promptly to maintain the overall health of the vehicle's electrical system.

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